WFH is really dependent on the situation of the individual. In my case, I can be very productive at home as I do not have any distractions such as small children, or other things. I did a study with some co-workers, and the results were mixed. I would say about 85% of those surveyed from my office wanted flexibility to WFH when needed, and the other 15% were either complete in office (too many distractions at home, having a need for some human contact, etc.), or complete WFH (no point going to the office to sit and look at their screen). I myself fall into the 85% as there is some value with in person collaboration, but there are a lot of tools if that is not possible. I like the flexibility, for instance today, we got 3-5 inches of snow in the AM, so why get on the roads to the office taking an extra 30-60 minutes to get to the office. Instead I was able to start working around 5am, and am now just taking a short break. I suggested to my wife that she should WFH today, but she decided to head to the office, it took her an extra 1.5 hrs to get there, essentially crawling at 25 mph.
There is a bit of hypocrisy with the senior leadership at large global companies. They preach in person collaboration, but when it comes to collaborating with colleagues on the other side of the planet, we cannot travel there (even once or twice a year), but instead must use our collaboration tools provided by IT.